Overhead tool support



Oct. 9,1945. 'T..C. ROBERT-SON 2,386,266

OVERHEAD TOOL SUPPORT Filed April 10, 1945 I 6 54- 6 6 5a 6 a 6 52 s! I 6 22 [8 23 o 21 0) 11 2 214- 34 23 I Z 56 as lo/v' 4z 4% mvE/vroks -HARRY N. comma JOSEPH RICHAEVS.

THOMAS c. ROBERTSONWeeeased). JULIA a ROBERTSON} Aommsrmmm Patented Oct. 9, 1945 U NITED OFFICE *ov-EitnEAD 'rooL- sur'rort'r Thomas Robertson, deceased, late of National Park, N. J., fiy'Julia c. t'e ertseir aaminisa tratrix, Naft'ienaljrark, N, 3 aini narry Conard and Joseph Richards, Philadelphia, Pa.

. Application-April 1 0, 194-3, SerlalNm- 482,663-

(Granted under the act oi -March 3,. 1883,- as amended April 30,- 1 928; 370 OL-G. 757) 1 Claim,

1 This invention relates'toasupport for an overhead pneumatictooi ai'idhas' as an Object to pro- 'vide'an in'fproved stand or support especially intended for holding a pneumatic tool such as a pneumatic riveting device 'or' 'a pneumatic hamjiiie'r or'chisel in an operative position when working in an "overhead location.

'further object of this invention "is to provide a means for supporting a pneumatic tool when it is in operation on any overhead structufe 'su'ches'against a ceiling er roof or the bottom- 'of 'a vessel under construction or in drydock.

l-"frie'umatic tools such as pneumatic riveting devices and pneumatic hammers, even in the smaller sizes, are usually of considerableweight, "the neighborhood'of 75 pounds or'more. It is physically impossible for an operator to hold such a tool in his hands and operate efliciently re'r a'ny considerable period or time. It has, therefore, bh customary to provide amedhai'il- 'eal supporting device 'for the pneumatic tool durih'g overhead operation of any considerable-length of "time. In shipbuilding, for instance, it has b'rl'custohiafy to support the -pneuinatic tool by a supporting device suspended through the bottom of 'the 'ship as, forinstanc'e, from an adjacent bolt eirivethole. This, however, has several disadvantages, among which are the-fact,

that the "rivet h'ole may not be convenient for the particular operation and further due to the great loss of time involved when it becomes necessary to shift the tool support from one location to another as the work progresses, for

in suchcases it is necessary to send a helper into the ship in order to release the supporting device from its depending rivet hole and then have him try and locate another rivet hole adjacent to the progress of the work.

With the present invention, such disadvantages are eliminated, for the support of this invention operates without the necessity of any convenient or pre-existing rivet hole and therefore without the necessity of using a helper inside of the vesselunder construction. Instead, this invention includes a support which cooperates with the bottom of the overhead structure and the floor therebeneath, yet, nevertheless, is movable to any desired location as needed and then is easily adjusted in its new location to provide a firm foundation for the operation of the riveting tool.

With the foregoing and other objects in view, as will hereinafter become apparent, this invention includes the construction, combination and arrangement of parts hereafter more fully set forth and described and illustrated on the accompanying drawing, "in which,

The figure is a perspective view of the stand ,or support 'of this invention 'in operative position.

'There is shown at Ill the stand or support of this invention in operative position, showin the pneumatic to'o'l, in this case a pneumatic riveting device I positioned 'for operation on a rivet" |2 'in'aplate f3 forming part of the bottom of a ship in the processor"construction, the usual pneumatic power supply hose l4 having been attached to the handle is or the riveting 11061 II. This lfivetil'l'g' tool H is provided with a pair of opposite extending pins 1 6" which 'may eeive the shaft '24 and a one side-of the recess isslotted and provided with apairof protuberance's zsthreuehwhienextends a wingeam fordrawii'g the protubra'nces together ahi'lth'us causing tlie'swi elbase 25 to securely grip the shaft 24.

integrally extending fromone'side tithe-swivel base '25 is as'wivei arm 28- whose 'end so is apertured to'reeeive post 31 on Which-is supported a U in 'whichthe rollers 22 are jourhale'd. The

aperturedend' "300i the swivel arm 23 is provided with a transverse opening 32 while the post 3| which carries the box l9 and rollers 22 is provided with a plurality of transverse openings 33, whereby the post 3| may be supported at any desired position to hold the box l9 and its rollers 22 at any desired height relative to the rollers 2| by inserting a pin through the apertures 33 in the post 3|.

To keep the rollers 2| and 22 in proper alignment, the roller box 23 for the rollers 2| is provided with a depending bifurcated toe 34 which extends over the upper edge of the swivel arm 28. The swivel base 25 rests on an'inverted U 35 which is welded to a base plate 36. The :base plate 36 is provided with a central aperture to receive the open end of the shaft 31, the shaft 31 and the box shaft 24 being vertically aligned. This shaft 31 is provided with an enlarged knob 38 swivelly supporting the plate 36 thereover, thus permitting a swivelling of the swivel base 25 as needed. Below knob 38, the shaft 31 is threaded as at 40 so that it may be adjustably secured between nuts 4| and 42 on a head plate 43 of the quadrupod 44.

This quadrupod 44 is also provided with a shelf 45 which, together-with the head plate 43, serves to keep the four legs in rigid relation to each other. Each of the four legs of this quadrupod 44 are hollow so as to receive a telescopic extension leg 46 therein. Each of the extension legs 46 is provided with a plurality of pairs of holes 41, any pair of which may be aligned with a pair of holes in the lower endof the quadrupod legs and held in such a selected'po'sition by means of a pin 48 therethrough, thus making the entire quadrupod adjustable both as to height and to contour of the supporting floor 50. The top of the roller box 23 is provided with an upwardly extending screw 5| on which is threaded a sleeve 52 to the top of which is swivelled a hand 53, as

by a ball and socket arrangement at 54.

4 In operation, the stand or support is set up in any desired location with the legs 46 so adjusted as to bring the hand53 somewhat close to the bottom of the ship plate l3 that is being riveted. A finer adjustment may then be made by suitably moving the nuts 4| and 42 on the supporting shaft 40 through the head plate 43'. The last fine adjustment may then be made by rotating the sleeve '52 on, shaft so as to cause the hand 53 to jam against the bottom of the hull plate l3. The rod or pipe 20 is inserted between the aligned pairs of rollers 2| and 22 which may be swivelled to place the rod yoke 18 so as to support the riveting tool H in any desired location. Obviously, by thus swivelling the device and pushing the rod or pipe 20 back and forth through the rollers, a considerable area of the hull plate l3 may be reached with a single location of the support oi" stand H]. The rivetfactured and used by or for the Government of ing too] H is placed ,onthe selected pair of supporting yoke recesses l! and then operated in the customary manner. By means of the throttle valve 55 and its conventional yieldable sleeve 56, the operator merely withdraws the tool to be placed over the desired rivet l2 and then opens the valve 55 which sends the riveting hammer against the rivet with no lifting efiort on the part of the operator. When this particular rivet is completed, the throttle valve 15 closed and the riveting tool pulled against its l hammer against the spring sleeve to permit the I yieldablesleeve 56, releasing it from that rivet and then the pipe 20 is swivelled or rolled, or bothQto reach the next rivet to be operated on the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

An overhead tool supporting stand, said stand including a multipod base, said multipod base having extendable legs telescopically adjustable thereon at a desired height, a shelf providing a bracing member between said legs, a platform securing the tops of said legs together, a shaft adjustably secured on said platform, a base ,member swivelly supported on said shaft, a second shaft mounted in said swivelled base member and axially aligned with said first-mentioned shaft, box member mounted on said secondmentioned shaft in fixed relation to said swivelled base member, a pair of pipe rollers, one above the other, journaled in said box member, an adjustably secured overhead pressure member mounted on said roller supporting box member, adapted to be braced against an overhead piece of work against which the tool is to be operated,

a swivel arm integrally extending from said base member in a horizontal direction, an adjustably secured roller supporting box member mounted on said swivel arm, pair of roller members journaled in said latter box member, one above .the other, a rod slidably mounted on said two pairs of roller members and a tool carrying bifurcated yoke member secured at one end of said rod wherebythe tool carried by said yoke member may be moved horizontally bysliding said rod and may be moved vertically by adjusting said second-mentioned roller supporting box member.

HARRYN. CONARD. JOSEPH RICHARDS. I JULIA C.. ROBERTSON,

Adminisimtrim'for Thomas C. Robertson, De-' 55 ceased. 

